Gallaudet ASL Connect
In the area of sign language teaching, Gallaudet University is well-known. Since 1864, the institution has been providing degree-level education for deaf and hard of hearing students in Washington, D.C. It also offers a free, basic online education for anyone interested in learning the fundamentals of sign language, as well as paid online college classes in ASL.
The latter includes mandatory attendance at planned lessons as well as video-based assignments that contribute to a pass/fail mark. The advantage of these programs is that they develop a strong sense of community and allow you to interact with a live tutor. The disadvantage is that, unlike a lot of online learning, these sessions do not allow you to choose your own timetable. Courses are also expensive, with prices ranging from $316 to $950 for a full semester.
If you're serious about learning to sign, the college-credit classes will provide you with thorough training and all of the learning resources you'll need; if you're simply curious about ASL, the basic free course will likely suffice. Although you'll only learn a few words and phrases, the immersive approach and thoughtful touches in the videos and quizzes show why this is a world-leading platform for teaching ASL.
Website: https://www.gallaudet.edu/asl-connect/
Reasons to buy:
+Free online course covering ASL basics
+Options to upgrade to more in-depth lessons
+Strong focus on ASL grammar and conversation markers